Faecal sludge to fuel – two research projects led by Eawag-Sandec (FaME and SEEK) - Senegal, Ghana, Uganda

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  • christoph
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Re: New video!! Innovation in Urban Sanitation: FaME and U-ACT research in Sub-Saharan Africa

Dear Linda, very nice video, covering the whole chain. hope you get clics in the range of millions.

especially the way towards use for burning seems an interesting approach, I think this depends VERY much on how we can bring costs down for drying. If that is possible it might be THE solution.

Thank you.
Christoph
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  • Moritz
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Re: New video!! Innovation in Urban Sanitation: FaME and U-ACT research in Sub-Saharan Africa

Dear Ben, Dear Christoph,

Thanks for your postive feedback and your comments on the video.

Ben, FaME was a research project ( SuSanA posts ). We found that depending on the local market environment, energy recovery options such as faecal sludge to solid fuel can generate significantly more revenue compared to conventional enduse as soil conditoner in agriculture. This revenue can be used, e.g., to lower dumping costs at the treatment plant or sustain treatment operation. Faecal sludge to fuel has not been implemented at a larger scale yet. The research project SEEK ( Sludge to Energy Enterprises in Kampala ) was started by Sandec and its research partners in September to build on this research and collect reliable data for implementation of this approach. SEEK is investigating co-processing of FS with other urban waste streams into fuel pellets and with them electricity through gasification.

We agree with Christoph. Technology innovations such as coagulation, modifications to drying beds or transfer of technologies from wastewater treatment or food processing are the key to make this one viable solution. Research in this direction is ongoing with the University of Kampala and University of Dakar.

All the best,

Moritz
Moritz Gold
PhD student ETH Zurich & Eawag/Sandec
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Re: New video!! Innovation in Urban Sanitation: FaME and U-ACT research in Sub-Saharan Africa

Daar all,

The FaME and U-ACT video is now available with French subtitles in order to ensure its uptake in West Africa and other French speaking regions!!!!



Best regards,
Moritz
Moritz Gold
PhD student ETH Zurich & Eawag/Sandec
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  • LindaStrande
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  • Check out this QR code for information on our FSM book (www.sandec.ch/fsm_book). Leader of the Excreta and Wastewater Management group in Sandec (the Department of Water and Sanitation in Developing Countries) at Eawag (the Swiss Federal Institute of Aqua
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Re: New video!! Innovation in Urban Sanitation: FaME and U-ACT research in Sub-Saharan Africa

Dear All, there has been a mistake! Somehow the link is broken now. Please visit the Sandec YouTube channel to view this and/or any other of our Videos:
www.youtube.com/channel/UCdDwnhvbqp2qMN1D4XyS8nA

Here are the links to the Video you are looking for. It is now in English/French/3 Minute/10 Minute Versions. Please enjoy!!

- Long version
- short version

Best regards from Hanoi, Linda
Linda Strande, PhD
Senior Scientist
Eawag - Swiss Federal Institute of Aquatic Science & Technology
Sandec - Department of Water & Sanitation in Developing Countries
www.sandec.ch
www.eawag.ch
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  • Elisabeth
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Re: Faecal Management Enterprises (FaME) project - using dried faecal sludge as a solid biofuel in kilns - and SEEK project

Hi Moritz,

I am just wondering how the SEEK project is progressing. Your last post about it was from a year ago (unless you started a new thread for it? But I can't fine one)

I am asking because I just mentioned your project in a post I made here:
forum.susana.org/forum/categories/53-fae...sludge-burning#16684

I thought of it in the context of that thread which is entitled: "Regulation about handling of the ash that is the residue of sludge burning". Perhaps you could also contribute in that thread, too, if this is something you have looked at in the past.

Thanks,
Elisabeth
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(under consultancy contract with Skat Foundation funded by WSSCC)

Dr. Elisabeth von Muench
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  • Moritz
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Re: Faecal Management Enterprises (FaME) project - using dried faecal sludge as a solid biofuel in kilns - and SEEK project

Hi SuSanA,

Sorry for the slow reply.

Here an update from the SEEK project ( www.sandec.ch ). The SEEK project researches processing of faecal sludge into fuel pellets and electricity through gasification (in Kampala, Uganda). Data collection of this project is still ongoing, this is what we learned so far:
  • The Bioburn pelletizer is an appropriate technology for pelletizing of faecal sludge. It works well and is ready for full-scale implementation. Dewatered faecal sludge (for example from a drying bed ) can be pelletizer at a moisture content of 40-60%. Please contact me if you are interested in the technology. Our partner Bioburn is currently working on product brochure.
  • Faecal sludge can also be co-pelletized with other biomass to increase endproduct quantities and reduce the ash content of the fuel, for example, with coffee husks or sawdust. However, this may require a binder (depending on the ratio of dewatered faecal sludge and biowaste, and the type of biowaste).
  • The big advantage of faecal sludge in a pellet form is that it can be dried much faster compared to faecal sludge on a drying bed. Therefore, it is of benefit for energy recovery of dried faecal sludge, for example, in cement or clay industries. Pellets are also favorable for storage and transport.
  • This said, our market research did not identify (yet) a company with a demand for a fuel in a pellet form. Schools could use pellets to meet their energy need (e.g. for cooking), however, the commonly do not have appropriate control of emissions. Industries (e.g. clay and cement industries) require powdered/crushed fuels.
  • Gasification of the faecal sludge pellets with the All Power Labs gasifier ( www.allpowerlabs.com ) and Husk Power Systems gasifier ( www.huskpowersystems.com ) available to the project was not successful. We think that this is due to the high ash content. Also faecal sludge pellets mixed with sawdust or coffee husks could not be gasified.
  • According to correspondence with All Power Labs, their new model will be able to use dried faecal sludge as a fuel. Apparently CARLA international is also working on gasification of faecal sludge but we could not establish a contact to exchange knowledge (yet).
  • In Europe and the US, large scale (> 1 MW) are available for waste gasification (for example of dewatered wastewater sludge). Companies include: Xylowatt ( www.xylowatt.com/ ) or ProCone ( www.procone.org ) . Xylowatt analysis our faecal sludge pellets in their laboratory and their results suggest that gasification of faecal sludge with their technology is possible. However, the manufactures and the project agreed that the capital , operation and maintenance requirements are too high for sustainable operation in Sub-Saharan Africa.
  • Following the not so good results from gasification we are currently gearing our research more towards pyrolysis of faecal sludge. There were several articles and video on the magic of carbonization and how it will make us rich, have sustainable FSM and save our forest (see below). We would like to add a bit of evidence to this.
edition.cnn.com/videos/world/2016/02/24/...p-sanitation-spc.cnn

www.monitor.co.ug/artsculture/Reviews/Lu...fp3apuz/-/index.html

  • In the remaining project period we will also work on geotubes and geobags for faecal sludge dewatering. Geotubes have been tested for faecal sludge (for example in Malaysia) to reduce transport distances for vacuum trucks. However, recommendation of treatment operators are not really available. We would like to support this to work towards implementation of this technology.
We would be very happy to get feedback from you on our work.

For example: Do you think industries in your city/country require an industrial fuel in a pellet form?

Thanks.

Moritz
Moritz Gold
PhD student ETH Zurich & Eawag/Sandec
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  • jindal1965
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Re: SEEK - Sludge to Energy Enterprises in Kampala

The text below is copied from:  https://www.eawag.ch/en/department/sandec/projects/faecal-sludge-quantification-and-characterisation/seek-sludge-to-energy-enterprises-in-kampala/

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In Kampala, Sandec and its research partners research the viability of co‑processing of faecal sludge and other urban waste streams to produce fuel pellets and with these electricity through gasification. The SEEK project will establish a pilot-scale research facility and conduct market research to provide reliable data, working towards market implementation of technologies and endproducts.

Context: In urban Sub-Saharan Africa, the sanitation needs of the majority of the population are met by onsite sanitation technologies. In Kampala, Uganda, these technologies provide for the sanitation needs of 95% of the population, approximately 1.8 million people. However, only around 50% of the excreta produced in the city is safely managed, and inadequate or unaffordable faecal sludge collection, transport and treatment are the reality for a large fraction of the population, jeopardizing environmental and public health.

Goal: The goal of the SEEK project was to work towards making resource-recovery based solutions to waste management a reality, thereby providing new business opportunities, and increasing access to renewable energy while improving public and environmental health in urban areas through the provision of sustainable sanitation service chains.
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